Modified graphitized carbon negative electrode and application thereof

• Main Authors: LI XIANFENG, JIA ZIYANG, ZHANG HUAMIN, ZHANG HONGZHANG
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a treatment method of a graphitized carbon negative electrode, a raw material of the graphitized carbon negative electrode contains onion-type carbon, and the treatment method comprises the following steps: forming a half-battery or a full-battery by using the graphitized carbon negative electrode, one or more than two of a metal simple substance or a salt capable of releasing metal ions, and a corresponding electrolyte, and carrying out cyclic charging and discharging to obtain the graphitized carbon negative electrode. And the charging and discharging voltage range is 0-4V. Onion-type carbon is subjected to structural recombination under specific charging and discharging conditions of the battery to form a hollow graphitized carbon shell structure, and the specific capacity of the material is continuously increased along with the change process, so that the cycle performance and the capacity of the battery are greatly improved. 一种石墨化碳负极的处理方法，所述石墨化碳负极的原料含有洋葱型碳，所述处理方法包括以下工序：将石墨化碳负极与金属